Go to or open the "System Update" app.
: Use the Qualcomm Flash Image Tool (QFIL) for total device recovery if the bootloader is corrupted. Upgrading Beyond Stock official letv leeco le pro 3 elite x722 stock rom link
: Boot into fastboot mode (Power + Volume Down) and use a Fastboot ROM package with a script like flash_all.bat . Go to or open the "System Update" app